Symmetric and conserved energy-momentum tensors in moving media

Details Symmetric and conserved energy-momentum tensors in moving media Symmetric and conserved energy-momentum tensors in moving media

2011-07-25

arxiv.org/abs/1107.5074v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, LaTeX, two references added with commentary

Scientific paper

A symmetric and conserved energy-momentum tensor for a scalar field in a moving medium is derived using the Gordon metric. When applied to an electromagnetic field, the method gives a similar result. This approach thus points a way out of the old Abraham-Minkowski controversy about the correct energy-momentum tensors for the electromagnetic field in a material medium. The new tensor describes the properties of the field while the Abraham tensor contains information about the field coupled to the medium.

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